5. Medifast ( MED) is engaged in the production, distribution, sale of weight management and disease management products, including the Medifast weight-loss program.

Analysts surveyed by Bloomberg expect the company to report earnings per share of 33 cents for 2010 fourth quarter, compared to earnings of 21 cents per share and 39 cents per share in the year-ago and quarter-ago periods, respectively. Medifast is likely to report earnings per share of $1.43 for 2010 and $1.84 for 2011, up from earnings of 81 cents per share for 2009, according to analysts polled by Bloomberg.

The stock will likely provide an upside of 51% over the next 12 months with a consensus target price of $38.7, according to analysts polled by Bloomberg. On the other hand, Hospira ( HSP), Weight Watchers International ( WTW), and Nutrisystem ( NTRI) are seen returning around 11%, -7% and 31%, respectively.

The stock's current forward PE multiple is18.0 and EV-to-EBITDA multiple is 9.0. All four analysts covering the stock recommend buying.

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